A small wooden block with mass 0.900 is suspended from the lower end of a light cord that is 1.50 long. The block is initially at rest. A bullet with mass 0.0106 is fired at the block with a horizontal velocity . The bullet strikes the block and becomes embedded in it. After the collision the combined object swings on the end of the cord. When the block has risen a vertical height of 0.725 , the tension in the cord is 4.66 .What is the velocity of the bullet initially.